Support for Bartender4
(Known limitation: Stance change may cause BT4 to temporarily delete glows added by this mod, if the trigger threshold selected is lower than the character's remaining rage, until the rage value changes again.)

v2.00
- Restructured to make glow support for bar managers other than the Blizz UI easier to implement
- Reworked and simplified glow support code for the Blizz UI
- Added glow support for Bartender4
- Added resizing option for the monitor graphic
- Disentangled threshold setting from glow in options

Would be awesome if it worked with other actionbar addons aswell. Keep up the good work.

Unfortunately, as it stands it needs a map of the frame names of the visible spell buttons. Easy enough to build for any individual mod, but I have no idea how to generalise that (or whether it's even possible).